Adding attachment for typewriting machines



624,319 April 1927' e. o. DEGENER ADDING ATTACHMENT FOR TYPEWRITING IACHINES Original Filed March 9. 1925 2 Sheets-Sheet 1 1,624, l Aprll 12, 1927. G. o. DEGENER 3 9 ADDING ATTACHMENT FOR TYPEWRITING MACHINES Original Filed March 9. 1925 2 SheetsSheet 2 Patented Apr. 12, 1927.

UNITED STATES PATENT OFFICE;

GUSTAVE O.- DEGENER, OF BROOKLYN, NEW YORK, ASSIGNOB 'lO ROYAL TYPEWRITER COMPANY, 1110., OF NEW YORK, N. Y., A CORPORATION OF NEW YORK.

ADDING ATTACHMENT FOR TYPEW'RITING MACHINES.

Original application filed March 9, 1925, Serial No. 14,315. Divided and this application filed August 14,

" 1925. Serial No. 50,282. i

sionfof thewrong key was prevented and in the other of which the wrong key could be depressed but would be prevented from returningto normal position. The parent I application contains claims generic to both forms and claims specific to the first form. The claims of this application are'intended to be specific to the second form oi error check mechanism whereinthe key may be depressed but the operator is immediately notified 'that an-error has been made.

Referenced-is had tothe parent case for .;a? disclosure of thegeneral structure of the adding' attachment and the details thereof, the illustration and specification of this case being" merely sufficient to show clearly and coiiiplet'elythe iorm o'f error check imecha nifsm' claimed herein.

.lln the drawings;

ig'ure 1 is'alongitudinalsection showing f theerrorcheck' mechanism and-such other i elements ofthe computing mechanism as are necessary to show the relative position and cooperation of the error check mechanism with the remainder of the machine.

.Figure 2 is a top plan view of the error check mechanism.

Figure 3 isa transverse secti line 33 of Figure 2 Figure 4 is a transverse section of a portion of the mechanism showing the means for bringing the error check mechanism into on on the operative condition by the movement of the totalizer.

'1. he travelling register a portion of which is designated at A in Figure 1 comprises a column totaliz-cer a portion of which is shown at 15 in Figure 4 and a grand totalstops at the end thereof so that thereus izer which has not been illustrated hereim This travelling register comprises transverse co1mecting"-bars 8 and 10 and travels on rods 12 and 13. These connecting bars and rods are connected to side plates 2 and 30f the frame. The whole is enclosed by a casing C. Each of the totalizers is of the usual type and includes a train of mechanism actuated from the numeral keys of the typewriter in the usual or desired manner; A series of rock shafts 2O underlie the typewriter key board and also a portion of the adding attachment and are connected to the typewriter key levers by links 22'which are pivoted to arms 21 rigid on one end to'the rock shafts. To the other endsof the rock'- shafts are connected arms 23 which are pivoted to sliding members 24 which operate the trains of adding mechanism;" p The transverse member 10 supports a'sheet slo'tted into a series of fingers and bent to form a substantial cylinder 28. Balls 29" are placed in the cylinder and are held'by just enough play to permit the passage of a; depending projection 30 on one ofthe-bars' 24' between two of the balls. lVhen'onekey etal member 27 which has its lower endis depressed andits connectedbar' 24. is

moved until the projection 30 passes between two ofa series of balls 29, it is impossible to depress another keylev'er at this time;

In an attachment of this type as is more clearly set forth in the parentapplication,

the items are written one by one in a column and recorded in the column totalizer, When it is desired to write the total the register is moved to a position which brings the the column totalizer and set up in the b 7 grand totalizer into the computing zone and rand" totalizer, no change in the condition ofthe' column totalizer bein made atthis time. The error check mechanism comprises devices which are thrown into operative rela-' tion by the movement of the register which brings the grand totalizer into the coinputin zone and said error check devices in the present form of the invention permit the depression of an incorrect key when the lotal is being copied but looks said hey against return movement. The operator is therefore notified that an error has been made and may correct this error before pro ceeding with his work.

This mechanism will now be described in detail. A projection 181 (Figures 1 and 4) on the travelling register contacts with a roller 182 as the register moves to the left to bring the column totalizer out of the computing zone and the grand totahzcr into said zone; This roller 182 is carried by one arm 183 of a bell crank lever pivoted at 184 to a bracket on the frame member 2 and having a downwardly extending arm 185. normally drawn in one direction by a spring attached to a stud 187 projecting from said frame. A stop 188 limits the movement of the bell crank lever under the influence of trance. The arm 185 is connected by a 183 to a lever 190 which is pivoted at 191 to a frame member. This lever has a hook 132 normally underlying a lever 123 (I? 1 and 4). hen this hook is mgv ed out of engaged relation with the lever 193 the latter moves counterclockwise about its pivot due to the weight of the longer arm thereof and also due to the tension of the i s A, rocking irame 239 s mounted on a shaft 2%0 which is pivoted in the frame plates 2 and 3 and this frame, is normally drawn in one direction by a spring 241. The ends of the sliding bars 24 normally contact with such rocking frame 239 at alltin' es so that the frame is moved each time a key is depressed, The 3 ring 241 therefore acts as a et rn sp ng or a l t h sli ng ba and the train of mechanism connected her to.

. en the lever 19.3 is released from its latch an drops under its weight and the tension 0f the spring 242, the downwardly moving end of the lever engages an arm 243 of a bell crank lever pivoted at 244 on a bracket 2&5 carried by the frame plate 3. The 'dcpendinv arm 24 6 of this bell crank lever has a room ed end lying between the sides of a U-slmpcd bearing 2d] of a crank 248 which is slidable on the shaft 210. This crank has a jaw 249 which engages the rock frame 239 when said crank is -mtwed to the left. 'lhereafter the frame 239 and the crank 248 will more together whenever the frame is rocked by the depression of a numeral key. It is to he rememhered that at this time the grand totalizer is in the computing zone.

A coil spring 250 within which lies a stop lunger 251 connects the upper end of the ell crank 248 with a crank arm 252. This crank arm is integral or rigid with a sector shaped cam member 253. The locking sectors 25.4 are all made with a slot. through which passes alug 267 on the sliding bars 24". The sectors as well as the crank 252 are positioned on the shaft 255 being spaced by collars and held rigidly by nuts at each side thereof. This shaft is mounted between the side plates 2 and 3 to allow for sli ht endwise movement in order to throw tie same into and out of operative position. The side movement of this shaft with its sectors is controlled by a lever 257 which is connected by a wire link 256 to the bell crank lever 246 so that both of these parts are always moved together but in opposite directions. That is to say, when the jaw 249 on the lever 246 is disconnected from the rocking frame 239 the rock shaft 255 with all of its rocking sectors thereon is also in disengaged position.

There is employed in each train of computmg mechanism a series of gears 216 each of which is provided on its face with a pair of projections 217. A digit feeler 214; which is mounted on the transverse member 10 is connectcd by a link 213 to one of the sectors 2.54. It is mounted to slide the extent of one space n ts ha t 2 a d s a n to the t ght o hold it normally in correct alignmentby a spring 258 attached thereto and'to the frame plate 3. It is stopped and alig ed in this p ion. by et me al bracket 2 9 c rri by the frame member 11.

A disconnect key 26.0 is pivot d at 261 to ra m mber 3 and ha a ink 2 2 onnec ing it to the member 66 (see Fi ure This member (-36 is engaged by tie travelling register en th lat is n home or ex- -r mc rig t and posit on. o as to. pr duc the s me su a is produ ed b t depression Of h dis nn ct l ver by hand tha when h regi te is in hom position th error c eck mec anism s inop rative an s ot m he dep ess of th numeral eys cd ne b k t 26 is a bel rank lever 11 are! 26% f whic pr ests out wardly through the opening in tlic frarne member 2 and underlies the disconnect ey e The other arm 6 e end dowmvardly and bears against the earn 253 which is also fast on the shaft 255 and in this manner the disconnect key moves the sectors to inactive position. The; lever 193 is provided with an otfset extension 266 underlying the arm 243 of the bell crank lever so that the movement of the lever 193 in either direction will operate this bell crank lever and effectconnection or disconnection between the frame and the looking; sectors. Projecting 261' on the slide ha r 24 are rightangnla-r in shape as shown in Figure 2. har'ing an inclined face 268 and st might face 269. These ears engage a stop rod 270 to limit the return movement of the parts.

The lever 193 is shown as provided with two extending arms 237 and 238. The arm 23? is operated by mechanism described in Ill) the parent case for returning the lever 193 into position where it is controlled by the latch 192 when the carriage is moved to the right. Projection 238 extends through the casing and may be manually actuated to produce the same result whenever desired. These features form no particular part of the present invention and are therefore not described in further detail.

'The operation may be described briefly as follows: When items are being written and entered in the column totalizer, the rocking frame 239 is disconnected from the error check mechanism and the projections 267 on the s-lidebars 24 move freely to the right of the lock sectors. As soon as the grand totalizer is brought to the computing zone and the lever 193 released as before described, the bell crank pivoted at 244 is operated to effect a lateral as well as a rotative connection between the rocking frame 239 and the lock sectors 254 carried by the shaft 255. The depression of any numeral key will now oscillate the shaft 255 and operate the digit feeler. If the digit feeler is stopped early in its movement, the spring 250 will permit the continued movement of the rocking frame 239. The slots in the sectors 254 are arranged in Stepped relations one corresponding to each digit from 0 to 9. Each key can be depressed without operating the error check mechanism only when the slot in the corresponding sector is in line with the projection 267. If the correct key is operated, this projection 267 will pass through the corresponding slot in the lock sector 254 and return therethrough without interference. However, if an incorrect key is depressed, the projection 267 will not meet a slot in the corresponding lock sector and the inclined face 268 of this projection will engage the'side of the lock sector and cam it-to the left 'against the spring 242, thus allowing the continued movement of the slide bar 24 and consequently a complete depression of the key lever. As soon as the projection 267 has passed the lock sector upon the downward movement of the key, the spring 242 Will immediately return the lock' sector to its right hand position and on the return movement of the slide bar the straight face 269 of the projection 267 will engage the lock sector and prevent return movement of the bar 24 and consequently prevent return movement of the depressed key. 7

The attention of the operator is thus called to the fact that an error has been made. To release the depressed key it is merely necessary to press the disconnect lever which acting upon the arm 264 of the bell crank lever causes the other arm 265 to engage the cam 253, thereby moving the shaft 255 and all of the lock sectors to the "left sufficiently to release the projection 267 from the lock sector which has held it against return movement. The depressed key is therefore permitted to return to normal position and the error may be corrected at once.

When the lever 193 is rocked in the opposite direction the upward movement of the extension 266 engaging under the arm 243 of the bell crank lever willmove the arm 246 of this lever in such manner as to disengage the jaw 249 from the frame 239 and thus break the connection between this frame and the locking sectors and also shifting them to the left.

Although subordinate to the parent case it is obvious that the invention may be regarded from different points of View and it is therefore to be considered as limited only by the scope of the appended claims.

1 claim as my invention:

l. A combined typewriting and computing mechanism comprising a travelling totalizer, key operated means for entering numbers in said totalizer when it is in a certain zone, and error check mechanism rendered effective by the movement of the totalizer to a different zone which prevents the complete return movement of an incorrect key if depressed.

2. A combined typewriting and computing mechanism comprising a travelling totalizer, key operated means for entering numbers in said totalizer when it is in a certain zone, and. error check mechanism rendered effective by the movement of the totalizer to a different zone which prevents the complete return movement of any key except those corresponding to the digits appearing in the total in said totalizer.

3. A combined typewritiug and computing mechanism comprising a travelling totalizer, key operated means for entering numbers in said toializer when it is in a certain zone, error check mechanismrendered effective by the movement of the totalizer to a different zone Which prevents the complete return movement of an incorrect, key if depressed, and means for releasing said key to permit its return to normal position.

4. A combined typewriting and computing mechanism comprising a travelling totalizer, key operated means for entering numbers in said totalizer when it is in a certain zone, error check mechanism rendered effective by the movement of the totalizer to a different zone which prevents the complete return' movement of any key except those corresponding to the digits appearin in the total in said totalizer, and means for releasing said key to permit its return to normal position.

5. A combined typewriting and computing mechanism comprising a travelling register having column and grand totalizers,

key operated means for entering numbers in either. totalizer when it is in the computing zone, and: error check mechanism which pro? vents complete return movement of an inaccurate key when the total appearing in the column totalizer is being entered into the gear-11d totalizer.

6. A combined typewr-iting and comput ing:mechanism comprising a travelling register having column and grand totalizers, key operated means for entering numbers in either totalizer when it is in the computing zone, error check mechanism which prevents complete return movement of an inaoeurateikeywhen the total appearing in the column totalizer is being entered into the grand itotalizer and manual means for re-v easing the key to permit its return to normal position.

7. A combined typewriting and compute ing; mechanism comprising a travelling car-- r agega-itravel ling register having column and grand totalizers, key operated means for entening numbers in either totalizer when it -ie in the. computing zone, error check mechanism automatically rendered Operativezhy the movement of. the register to bring the-grand totalizer into the computing zone and preventing complete return movement; oi-any inconrect key when depressed at this timmandimeans; for releasing saidkey.

to permit it;.to return to: normal position. ;8.- A combined typewriting: and comput- 1ng-mflhnl8m comprising a travelling register having column. and; grand totalizers,

key operated -means for entering. numbers in ither 'itotalizer when it is in the computing ne, aseriee of .a ljillifirygears in said column talizer, and means cooperating with itl gears andaoting to prevent complete turn oi an. incorrectly depressed key when heigmnd qtalizer, is in the computing zone,

-9.A4:0mbined typewriting and computg m chanism comprising a travellin reger shaving-column and grand :tota izers,

ey nneratetl-means for entering numbers in either ztotalizer when itis in the computing zone, aserieso auxiliary gears in said colmn; tota izelyprojections carried thereby, a member normally permitting complete ireturn 1 movement. of ,a depressed: key, :and means cooperating: with -.said pr j ctions to. au e-said member to prevent the complete etu n movem n of an ncorrect hey Iv en hfl rand t talizer is-i he computing zone- .m A c mbi ed ypc ritingand computn mec anism comprising 1 a travelling reg. erh t ng olumn and g and otalizers, ey op ra ed means for enter ng number in the;.;tota zer when .is n the computin ne, e ser-ins of m mber whichnorm ly permit complete return movement of any desireii numer lvkey, and m an u m tily muttered e fe tive the movemen 5E he segister tehringhth erends talizer nto,

he computing zone to prevent ompl te eturn movement of an incorre key atthis time. V

11. A combined typewriting and compute ing mechanism comprising a travelling-siege. isterhaving columm and gran -to al viztnn key operated means. for entering numbers-in! eithertotahzer whenqit is in the compnting: zone, a series of members which normally" permit complete returnmovement of any dosired numeral key, a series of auxiliarygears in the columntotali'zer, and means. automatically rendered efl'eotive by the movementof the register to bring the grand totalizer-into. the computing zone andcontrolled by said auxiliary gears to prevent complete return movement of an "incorrect key at this time. a 1

12. A combined typewriting and compile ing mechanism oomprismga travelling register having column and grand totalizers; key operated means for enteringnumbers in either totalizer when it isin the computing zone, a series. of members which normally permitcomplete return movementof any clesired numeral key, means automatically renderedeffective by the movement of the register to bring the grand totalizer into the computing zone to prevent complete return. movement of an incorrect key at. thisntime, 9 and manual means for releasing said-pres venting means. I v 1 .13. A comhined.=typew ;i ting and compute ing mechanism comprising a travelling regis-f terhaving column .and garand totalizers, key 1 operated means for entering numbers. in either totalizerwhen iii isin the computing,-

zone, a series of members which normally pe zmjit complete return movement of any; eepressecl numeral key,-a series of .auxlhary gears in thecoslumn 'totahzer,means -au o .lnatimllyv rendered effective by he mo ement of the regist r to bring the g and :tO-

,talizer' into. the, compnting zone a jdLJGOLh ollcda y th aux liarygea-rs to prevent 1 mplet re urn monement 0t an ncorrect ey at his t m ,v and ma ua mea a or -re l asing-sa d preventng means. t.

1 A combin d itynew iting an comp te gunachine i olnpr sine I a; eries of lsl-idabie ey tua ed m mb rs, aser-ieso lo k s ean amia e sha tc fvyie ai ec ors, mean-e "fo making s id? E QQtQBS' n -n th dep eeio Q th key andmeens. for slielingisaiti shaft endwise upon th -nfitklr ation of an incorrect key.

15-; 'A c m n d yn it e and i ee nut- -gm hine wmpris nea s e f s i ab e key actuated members, aseries of look see an end is m v ble ha t-e rn ngm d,

sectors, means for rocking saidisectors upon 16. A combined typewriting and computing machine comprising a series of slidable key actuated members, a series of lock sectors, an endwise movable shaft carrying said sectors, means for rocking said sectors upon the depression of the keys, means for sliding said shaft endwise upon the actuation of an incorrect key, and manual means for slid ing said shaft endwise.

17. A combined typewriting and computing machine comprising a series of slidablc key actuated members, a series of look seetors, an-endwise movable shaft carrying said sectors, means for rocking said sectors upon the depression of the keys, a cam upon each of said slidable members for sliding the shaft endwise upon the actuation of an incorrect key, and manual means for sliding said shaft endwise.

18. A combined typewriting and computing mechanism comprising a travelling register including column and grand totalizers, a series of locking sectors, a rocking frame actuated upon the depression of a numeral key, and means for effecting an operative connection between the rocking frame and the locking sectors by the movement of the register to bring the grand totalizer into the computing zone.

19. A combined typewriting and computing mechanism comprising a travelling register including column and grand totalizers, a series of locking sectors, a rocking frame actuated upon the depression of a numeral key, means for effecting an operative connection between the rocking frame and the locking sectors by the movement of the register to bring the grand totalizer into the computing zone, and means whereby the locking sectors prevent retur'I'Fnro'Mment of an incorrect key at this time.

20. A combined typewriting and computing mechanism comprising a travelling register including column and grand totalizers, a series of locking sectors, a rocking frame actuated upon the depression of a numeral key, means for effecting an operative con ncction between the rocking frame and the locking sectors by the movement of the register to bring the grand totalizer into the computing zone, means whereby the locking sectors prevent return movement of an incorrect key at this time, and means for releasing said key from the locking sectors to permit complete return movement.

21. A combined typewriting and comput' ing mechanism comprising a travelling register including column and grand totalizers, a rocking frame actuated by the depression of a numeral key, error check mechanism, and means controlled by the movement of the register to bring the grand totalizer into the computing zone for connecting the rocking frame to the error check mechanism.

22. A combined typewriting and computing mechanism comprising a travelling register including column and grand totalizers, a travelling carriage, a rocking frame actuated by the depression of a numeral key, error check mechanism, means controlled by the movement of the register to bring the grand totalizer into the computing zone for connecting the rocking frame to the error check mechanism, and means for breaking said connection.

In testimony whereof, I have hereunto subscribed my name.

GUSTAVE O. DEGE-NER. 

